Beginner stuck with Terminal

I have Ubuntu loaded on my hard disk as well as a boot option to Win XP. I seem to be able to do most things I want but I'm stuck with navigating the file system in terminal.When I select "Places" the select "Home", I get a drop down File Browser which lists in the left panel:-"Username" (highlighted)ThenDESKTOPFILE SYSTEM 41GB <edia (2nd HD contents)NETWORK SERVERSDELET ED ITEMS----------------------------------------------------------------DOCUMENTSMUSICPICTURESVIDEO.If I select "FILE SYSTEM" I get a number of "Folders" in the right panel including "BIN" "BOOT" "CD ROM" "ETC" and so on including a "Folder" named "HOST" which contains the file system of my XP Boot diskNOW THE PROBLEMWhen I try to cd to any of the above items in Terminal I get the message this is not a file or similar. If I know how to get to the stage of being able to ls my Host folder and see a list of files, I will be able to navigate the whole system.Any assistance would be much appreciated

Are you remembering that

Are you remembering that Linux is case sensitive? If the file folder is called e.g. usr there is no point typing Usr or USR or anything but usr...

Also note that when you open

Also note that when you open a terminal, you start in your home directory (represented by ~). As an absolute path, this is /home/USERNAME (where USERNAME is your username).

If you want to get to some top-level folder (like usr), you should use an "absolute path". Rather than using drive letters like Windows, Linux uses a forward slash "/" to represent the root. So, to go to the usr directory, you could type:

cd /usr

Also useful: if you would like to go "up" one directory (i.e. from /home/USERNAME to /home), you can use "..", which stands for the parent directory. For example:

cd ..

As a final note, on Linux, most of your personal files and changes should go somewhere in your home directory (/home/USERNAME). This is the only place where you have user-level access to modify files, and it's generally the only place you need it as well. Be very careful if you go changing files elsewhere, as they can potentially corrupt your system.